If you review my ERFL log I completed it. I used minor inclines at times and it gave my hamstrings an overworked, overstretched feeling (made worse by APT I suffer from) and reduced the amount of overall cardio I was able to do.

I would DEFINITELY not try this on a steep incline. You are just asking for injury.

Also, I wouldn't just start ERFL out of nowhere. I had been doing TONS of walking on almost a daily basis for months before I did my 4 days in the Valley

Ive worked 12+ hour shifts physical labor jobs off and on my entire life.

Maintenance at biggest pork plant in nation, average 12.5 hour shifts. Id say was equal to walking 2mph all day or 1.5 on easier day.

I just dont really understand how they get the -6k calorie deficit numbers from erfl. I can be so exhausted i just lay in bed all weekend, im still only burning like 3600 calories a day, AT WORST. going from that to 6k is just mind boggling, there's no way.